Drinking vessel

Details Drinking vessel Drinking vessel

1995-10-19

1998-08-04

Shoap, Allan N.

Receptacles

Receptacle having flexible, removable inner liner

Means for venting air trapped between the liner and its...

220457, 220608, 220626, 427181, 427197, 427279, 427287, B05D 502, B05D 722, B65D 2302

Patent

active

057881111

DESCRIPTION:

BRIEF SUMMARY
This invention relates to a drinking vessel. In particular, it relates to a vessel in the form of a glass for containing beverages containing gas such as carbon dioxide or a carbon dioxide
itrogen mix for example, particularly beverages such as beer or sparkling wines.
Many beverages contain dissolved gases such as carbon dioxide or carbon dioxide
itrogen either as a result of fermentation (eg. beer, sparkling wines) or by the addition of the gas, eg. adding carbon dioxide to carbonate a beverage. With drinks such as beer and lager and cider, a desirable feature of the product is the head which forms on the top of the product. The head is formed by the dissolved carbon dioxide in the liquid being released upon the liquid being poured into the vessel. In some products the head may be formed from bubbles of CO.sub.2 /N.sub.2. However, if the beverage is allowed to stand for any length of time then the head will tend to disperse and disappear. Thus, a glass of beer or lager that has been left undrunk or only partially drunk for some time loses its head and becomes unattractive.
In attempts to improve head retention the principals of nucleation have been applied. It is known that bubbles tend to form at an interface or surface (eg. the walls of the container) rather than in the bulk of a liquid. It has also been found that bubble formation increases by a process known as nucleation on an irregular surface such as imperfections or scratches on the glass surface, or on specks of dust or other particles. The interior surface of a drinking glass is conventionally made to be as smooth as possible which tends to reduce the amount of bubbles produced by heterogeneous nucleation and to hasten the disappearance of the head. Recently, attempts have been made to design vessels which encourage heterogeneous nucleation by roughening the interior surface of selected parts of a drinking vessel. This has been done by using techniques such as etching with lasers or sandblasting to roughen and form pits in the surface of the glass.
The problem with this type of approach is that it may tend to weaken the structure of the glass itself, depending on the design, by chipping glass away or roughening it thereby reducing its thickness at selected pits. This could result in stress raisers which might lead to an increased likelihood of breakages.
The high turnover of glasses in commercial establishments, due to loss and breakage, means that the cost of each glass must be as low as possible and any additional expense for treating the glass for nucleation be minimised.
The present invention arose in an attempt to overcome the above problems.
According to the present invention, there is provided a drinking vessel or fluid container wherein one or more nucleation sites are provided on the internal surface by applying a material suitable for providing nucleation sites, to the internal surface.
The material may be applied in a selected pattern and the vessel or container may be of glass.
Preferably the material is a textured one, which is preferably an ink in the form of a paste, which may comprise a soft lead bisilicate or soft bisilicate glass mixed with carriers which may be organic resins and/or solvents. The ink or other textured material may be printed upon the interior surface of the glass by using methods such as screen printing, pad printing, jet printing or heat transference. Alternatively, the ink may be injected onto the glass. Preferably, the process is done subsequent to manufacture of the vessel itself.
Although the paste is usually white, it is possible to add colouring agents, or to use different inks or pastes, to apply coloured material to the glass. Two or more colours may be applied, eg. in separate processing steps.
The glass may then be annealed by firing at a high temperature to cause the material to adhere to the body of the vessel. This temperature is preferably between 400.degree. C. and about 700.degree. C. In one embodiment, the temperature is 580.degree. C. Generally, it will be required to raise the temperatur

REFERENCES:
patent: 3496006 (1970-02-01), Rideout et al.
patent: 3506469 (1970-04-01), Surrey
patent: 3696741 (1972-10-01), Reinke
patent: 3898092 (1975-08-01), Rea
patent: 4041194 (1977-08-01), Jenkins
patent: 4279938 (1981-07-01), Hildebrand
patent: 5034244 (1991-07-01), Berrer et al.
patent: 5066360 (1991-11-01), Daley et al.

Affiliated with

Also associated with

Rating

Drinking vessel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drinking vessel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drinking vessel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1168783